Two airliners are 1600 miles apart and heading towards eachother at different altitudes. the first plane is traveling north at 620 miles per hour, while the second is traveling south at 780 miles per hour. when will the planes pass each other

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.